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// Current version.
  var VERSION = '1.13.7';

// Establish the root object, `window` (`self`) in the browser, `global`
  // on the server, or `this` in some virtual machines. We use `self`
  // instead of `window` for `WebWorker` support.
  var root = (typeof self == 'object' && self.self === self && self) ||
            (typeof global == 'object' && global.global === global && global) ||
            Function('return this')() ||
            {};

// Save bytes in the minified (but not gzipped) version:
  var ArrayProto = Array.prototype, ObjProto = Object.prototype;
  var SymbolProto = typeof Symbol !== 'undefined' ? Symbol.prototype : null;

// Create quick reference variables for speed access to core prototypes.
  var push = ArrayProto.push,
      slice = ArrayProto.slice,
      toString = ObjProto.toString,
      hasOwnProperty = ObjProto.hasOwnProperty;

// Modern feature detection.
  var supportsArrayBuffer = typeof ArrayBuffer !== 'undefined',
      supportsDataView = typeof DataView !== 'undefined';

// All **ECMAScript 5+** native function implementations that we hope to use
  // are declared here.
  var nativeIsArray = Array.isArray,
      nativeKeys = Object.keys,
      nativeCreate = Object.create,
      nativeIsView = supportsArrayBuffer && ArrayBuffer.isView;

// Create references to these builtin functions because we override them.
  var _isNaN = isNaN,
      _isFinite = isFinite;

// Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
  var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
  var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
    'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];

// The largest integer that can be represented exactly.
  var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;

// Some functions take a variable number of arguments, or a few expected
  // arguments at the beginning and then a variable number of values to operate
  // on. This helper accumulates all remaining arguments past the function’s
  // argument length (or an explicit `startIndex`), into an array that becomes
  // the last argument. Similar to ES6’s "rest parameter".
  function restArguments(func, startIndex) {
    startIndex = startIndex == null ? func.length - 1 : +startIndex;
    return function() {
      var length = Math.max(arguments.length - startIndex, 0),
          rest = Array(length),
          index = 0;
      for (; index < length; index++) {
        rest[index] = arguments[index + startIndex];
      }
      switch (startIndex) {
        case 0: return func.call(this, rest);
        case 1: return func.call(this, arguments[0], rest);
        case 2: return func.call(this, arguments[0], arguments[1], rest);
      }
      var args = Array(startIndex + 1);
      for (index = 0; index < startIndex; index++) {
        args[index] = arguments[index];
      }
      args[startIndex] = rest;
      return func.apply(this, args);
    };
  }

// Is a given variable an object?
  function isObject(obj) {
    var type = typeof obj;
    return type === 'function' || (type === 'object' && !!obj);
  }

// Is a given value equal to null?
  function isNull(obj) {
    return obj === null;
  }

// Is a given variable undefined?
  function isUndefined(obj) {
    return obj === void 0;
  }

// Is a given value a boolean?
  function isBoolean(obj) {
    return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
  }

// Is a given value a DOM element?
  function isElement(obj) {
    return !!(obj && obj.nodeType === 1);
  }

// Internal function for creating a `toString`-based type tester.
  function tagTester(name) {
    var tag = '[object ' + name + ']';
    return function(obj) {
      return toString.call(obj) === tag;
    };
  }

var isString = tagTester('String');

var isNumber = tagTester('Number');

var isDate = tagTester('Date');

var isRegExp = tagTester('RegExp');

var isError = tagTester('Error');

var isSymbol = tagTester('Symbol');

var isArrayBuffer = tagTester('ArrayBuffer');

var isFunction = tagTester('Function');

// Optimize `isFunction` if appropriate. Work around some `typeof` bugs in old
  // v8, IE 11 (#1621), Safari 8 (#1929), and PhantomJS (#2236).
  var nodelist = root.document && root.document.childNodes;
  if (typeof /./ != 'function' && typeof Int8Array != 'object' && typeof nodelist != 'function') {
    isFunction = function(obj) {
      return typeof obj == 'function' || false;
    };
  }

var isFunction$1 = isFunction;

var hasObjectTag = tagTester('Object');

// In IE 10 - Edge 13, `DataView` has string tag `'[object Object]'`.
  // In IE 11, the most common among them, this problem also applies to
  // `Map`, `WeakMap` and `Set`.
  // Also, there are cases where an application can override the native
  // `DataView` object, in cases like that we can't use the constructor
  // safely and should just rely on alternate `DataView` checks
  var hasDataViewBug = (
        supportsDataView && (!/\[native code\]/.test(String(DataView)) || hasObjectTag(new DataView(new ArrayBuffer(8))))
      ),
      isIE11 = (typeof Map !== 'undefined' && hasObjectTag(new Map));

var isDataView = tagTester('DataView');

// In IE 10 - Edge 13, we need a different heuristic
  // to determine whether an object is a `DataView`.
  // Also, in cases where the native `DataView` is
  // overridden we can't rely on the tag itself.
  function alternateIsDataView(obj) {
    return obj != null && isFunction$1(obj.getInt8) && isArrayBuffer(obj.buffer);
  }

var isDataView$1 = (hasDataViewBug ? alternateIsDataView : isDataView);

// Is a given value an array?
  // Delegates to ECMA5's native `Array.isArray`.
  var isArray = nativeIsArray || tagTester('Array');

// Internal function to check whether `key` is an own property name of `obj`.
  function has$1(obj, key) {
    return obj != null && hasOwnProperty.call(obj, key);
  }

var isArguments = tagTester('Arguments');

// Define a fallback version of the method in browsers (ahem, IE < 9), where
  // there isn't any inspectable "Arguments" type.
  (function() {
    if (!isArguments(arguments)) {
      isArguments = function(obj) {
        return has$1(obj, 'callee');
      };
    }
  }());

var isArguments$1 = isArguments;

// Is a given object a finite number?
  function isFinite$1(obj) {
    return !isSymbol(obj) && _isFinite(obj) && !isNaN(parseFloat(obj));
  }

// Is the given value `NaN`?
  function isNaN$1(obj) {
    return isNumber(obj) && _isNaN(obj);
  }

// Predicate-generating function. Often useful outside of Underscore.
  function constant(value) {
    return function() {
      return value;
    };
  }

// Common internal logic for `isArrayLike` and `isBufferLike`.
  function createSizePropertyCheck(getSizeProperty) {
    return function(collection) {
      var sizeProperty = getSizeProperty(collection);
      return typeof sizeProperty == 'number' && sizeProperty >= 0 && sizeProperty <= MAX_ARRAY_INDEX;
    }
  }

// Internal helper to generate a function to obtain property `key` from `obj`.
  function shallowProperty(key) {
    return function(obj) {
      return obj == null ? void 0 : obj[key];
    };
  }

// Internal helper to obtain the `byteLength` property of an object.
  var getByteLength = shallowProperty('byteLength');

// Internal helper to determine whether we should spend extensive checks against
  // `ArrayBuffer` et al.
  var isBufferLike = createSizePropertyCheck(getByteLength);

// Is a given value a typed array?
  var typedArrayPattern = /\[object ((I|Ui)nt(8|16|32)|Float(32|64)|Uint8Clamped|Big(I|Ui)nt64)Array\]/;
  function isTypedArray(obj) {
    // `ArrayBuffer.isView` is the most future-proof, so use it when available.
    // Otherwise, fall back on the above regular expression.
    return nativeIsView ? (nativeIsView(obj) && !isDataView$1(obj)) :
                  isBufferLike(obj) && typedArrayPattern.test(toString.call(obj));
  }

var isTypedArray$1 = supportsArrayBuffer ? isTypedArray : constant(false);

// Internal helper to obtain the `length` property of an object.
  var getLength = shallowProperty('length');

// Internal helper to create a simple lookup structure.
  // `collectNonEnumProps` used to depend on `_.contains`, but this led to
  // circular imports. `emulatedSet` is a one-off solution that only works for
  // arrays of strings.
  function emulatedSet(keys) {
    var hash = {};
    for (var l = keys.length, i = 0; i < l; ++i) hash[keys[i]] = true;
    return {
      contains: function(key) { return hash[key] === true; },
      push: function(key) {
        hash[key] = true;
        return keys.push(key);
      }
    };
  }

// Internal helper. Checks `keys` for the presence of keys in IE < 9 that won't
  // be iterated by `for key in ...` and thus missed. Extends `keys` in place if
  // needed.
  function collectNonEnumProps(obj, keys) {
    keys = emulatedSet(keys);
    var nonEnumIdx = nonEnumerableProps.length;
    var constructor = obj.constructor;
    var proto = (isFunction$1(constructor) && constructor.prototype) || ObjProto;

// Constructor is a special case.
    var prop = 'constructor';
    if (has$1(obj, prop) && !keys.contains(prop)) keys.push(prop);

while (nonEnumIdx--) {
      prop = nonEnumerableProps[nonEnumIdx];
      if (prop in obj && obj[prop] !== proto[prop] && !keys.contains(prop)) {
        keys.push(prop);
      }
    }
  }

// Retrieve the names of an object's own properties.
  // Delegates to **ECMAScript 5**'s native `Object.keys`.
  function keys(obj) {
    if (!isObject(obj)) return [];
    if (nativeKeys) return nativeKeys(obj);
    var keys = [];
    for (var key in obj) if (has$1(obj, key)) keys.push(key);
    // Ahem, IE < 9.
    if (hasEnumBug) collectNonEnumProps(obj, keys);
    return keys;
  }

// Is a given array, string, or object empty?
  // An "empty" object has no enumerable own-properties.
  function isEmpty(obj) {
    if (obj == null) return true;
    // Skip the more expensive `toString`-based type checks if `obj` has no
    // `.length`.
    var length = getLength(obj);
    if (typeof length == 'number' && (
      isArray(obj) || isString(obj) || isArguments$1(obj)
    )) return length === 0;
    return getLength(keys(obj)) === 0;
  }

// Returns whether an object has a given set of `key:value` pairs.
  function isMatch(object, attrs) {
    var _keys = keys(attrs), length = _keys.length;
    if (object == null) return !length;
    var obj = Object(object);
    for (var i = 0; i < length; i++) {
      var key = _keys[i];
      if (attrs[key] !== obj[key] || !(key in obj)) return false;
    }
    return true;
  }

// If Underscore is called as a function, it returns a wrapped object that can
  // be used OO-style. This wrapper holds altered versions of all functions added
  // through `_.mixin`. Wrapped objects may be chained.
  function _$1(obj) {
    if (obj instanceof _$1) return obj;
    if (!(this instanceof _$1)) return new _$1(obj);
    this._wrapped = obj;
  }

_$1.VERSION = VERSION;

// Extracts the result from a wrapped and chained object.
  _$1.prototype.value = function() {
    return this._wrapped;
  };

// Provide unwrapping proxies for some methods used in engine operations
  // such as arithmetic and JSON stringification.
  _$1.prototype.valueOf = _$1.prototype.toJSON = _$1.prototype.value;

_$1.prototype.toString = function() {
    return String(this._wrapped);
  };

// Internal function to wrap or shallow-copy an ArrayBuffer,
  // typed array or DataView to a new view, reusing the buffer.
  function toBufferView(bufferSource) {
    return new Uint8Array(
      bufferSource.buffer || bufferSource,
      bufferSource.byteOffset || 0,
      getByteLength(bufferSource)
    );
  }

// We use this string twice, so give it a name for minification.
  var tagDataView = '[object DataView]';

// Internal recursive comparison function for `_.isEqual`.
  function eq(a, b, aStack, bStack) {
    // Identical objects are equal. `0 === -0`, but they aren't identical.
    // See the [Harmony `egal` proposal](https://wiki.ecmascript.org/doku.php?id=harmony:egal).
    if (a === b) return a !== 0 || 1 / a === 1 / b;
    // `null` or `undefined` only equal to itself (strict comparison).
    if (a == null || b == null) return false;
    // `NaN`s are equivalent, but non-reflexive.
    if (a !== a) return b !== b;
    // Exhaust primitive checks
    var type = typeof a;
    if (type !== 'function' && type !== 'object' && typeof b != 'object') return false;
    return deepEq(a, b, aStack, bStack);
  }

// Internal recursive comparison function for `_.isEqual`.
  function deepEq(a, b, aStack, bStack) {
    // Unwrap any wrapped objects.
    if (a instanceof _$1) a = a._wrapped;
    if (b instanceof _$1) b = b._wrapped;
    // Compare `[[Class]]` names.
    var className = toString.call(a);
    if (className !== toString.call(b)) return false;
    // Work around a bug in IE 10 - Edge 13.
    if (hasDataViewBug && className == '[object Object]' && isDataView$1(a)) {
      if (!isDataView$1(b)) return false;
      className = tagDataView;
    }
    switch (className) {
      // These types are compared by value.
      case '[object RegExp]':
        // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
      case '[object String]':
        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
        // equivalent to `new String("5")`.
        return '' + a === '' + b;
      case '[object Number]':
        // `NaN`s are equivalent, but non-reflexive.
        // Object(NaN) is equivalent to NaN.
        if (+a !== +a) return +b !== +b;
        // An `egal` comparison is performed for other numeric values.
        return +a === 0 ? 1 / +a === 1 / b : +a === +b;
      case '[object Date]':
      case '[object Boolean]':
        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
        // millisecond representations. Note that invalid dates with millisecond representations
        // of `NaN` are not equivalent.
        return +a === +b;
      case '[object Symbol]':
        return SymbolProto.valueOf.call(a) === SymbolProto.valueOf.call(b);
      case '[object ArrayBuffer]':
      case tagDataView:
        // Coerce to typed array so we can fall through.
        return deepEq(toBufferView(a), toBufferView(b), aStack, bStack);
    }

var areArrays = className === '[object Array]';
    if (!areArrays && isTypedArray$1(a)) {
        var byteLength = getByteLength(a);
        if (byteLength !== getByteLength(b)) return false;
        if (a.buffer === b.buffer && a.byteOffset === b.byteOffset) return true;
        areArrays = true;
    }
    if (!areArrays) {
      if (typeof a != 'object' || typeof b != 'object') return false;

// Objects with different constructors are not equivalent, but `Object`s or `Array`s
      // from different frames are.
      var aCtor = a.constructor, bCtor = b.constructor;
      if (aCtor !== bCtor && !(isFunction$1(aCtor) && aCtor instanceof aCtor &&
                               isFunction$1(bCtor) && bCtor instanceof bCtor)
                          && ('constructor' in a && 'constructor' in b)) {
        return false;
      }
    }
    // Assume equality for cyclic structures. The algorithm for detecting cyclic
    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.

// Initializing stack of traversed objects.
    // It's done here since we only need them for objects and arrays comparison.
    aStack = aStack || [];
    bStack = bStack || [];
    var length = aStack.length;
    while (length--) {
      // Linear search. Performance is inversely proportional to the number of
      // unique nested structures.
      if (aStack[length] === a) return bStack[length] === b;
    }

// Add the first object to the stack of traversed objects.
    aStack.push(a);
    bStack.push(b);

// Recursively compare objects and arrays.
    if (areArrays) {
      // Compare array lengths to determine if a deep comparison is necessary.
      length = a.length;
      if (length !== b.length) return false;
      // Deep compare the contents, ignoring non-numeric properties.
      while (length--) {
        if (!eq(a[length], b[length], aStack, bStack)) return false;
      }
    } else {
      // Deep compare objects.
      var _keys = keys(a), key;
      length = _keys.length;
      // Ensure that both objects contain the same number of properties before comparing deep equality.
      if (keys(b).length !== length) return false;
      while (length--) {
        // Deep compare each member
        key = _keys[length];
        if (!(has$1(b, key) && eq(a[key], b[key], aStack, bStack))) return false;
      }
    }
    // Remove the first object from the stack of traversed objects.
    aStack.pop();
    bStack.pop();
    return true;
  }

// Perform a deep comparison to check if two objects are equal.
  function isEqual(a, b) {
    return eq(a, b);
  }

// Retrieve all the enumerable property names of an object.
  function allKeys(obj) {
    if (!isObject(obj)) return [];
    var keys = [];
    for (var key in obj) keys.push(key);
    // Ahem, IE < 9.
    if (hasEnumBug) collectNonEnumProps(obj, keys);
    return keys;
  }

// Since the regular `Object.prototype.toString` type tests don't work for
  // some types in IE 11, we use a fingerprinting heuristic instead, based
  // on the methods. It's not great, but it's the best we got.
  // The fingerprint method lists are defined below.
  function ie11fingerprint(methods) {
    var length = getLength(methods);
    return function(obj) {
      if (obj == null) return false;
      // `Map`, `WeakMap` and `Set` have no enumerable keys.
      var keys = allKeys(obj);
      if (getLength(keys)) return false;
      for (var i = 0; i < length; i++) {
        if (!isFunction$1(obj[methods[i]])) return false;
      }
      // If we are testing against `WeakMap`, we need to ensure that
      // `obj` doesn't have a `forEach` method in order to distinguish
      // it from a regular `Map`.
      return methods !== weakMapMethods || !isFunction$1(obj[forEachName]);
    };
  }

// In the interest of compact minification, we write
  // each string in the fingerprints only once.
  var forEachName = 'forEach',
      hasName = 'has',
      commonInit = ['clear', 'delete'],
      mapTail = ['get', hasName, 'set'];

// `Map`, `WeakMap` and `Set` each have slightly different
  // combinations of the above sublists.
  var mapMethods = commonInit.concat(forEachName, mapTail),
      weakMapMethods = commonInit.concat(mapTail),
      setMethods = ['add'].concat(commonInit, forEachName, hasName);

var isMap = isIE11 ? ie11fingerprint(mapMethods) : tagTester('Map');

var isWeakMap = isIE11 ? ie11fingerprint(weakMapMethods) : tagTester('WeakMap');

var isSet = isIE11 ? ie11fingerprint(setMethods) : tagTester('Set');

var isWeakSet = tagTester('WeakSet');

// Retrieve the values of an object's properties.
  function values(obj) {
    var _keys = keys(obj);
    var length = _keys.length;
    var values = Array(length);
    for (var i = 0; i < length; i++) {
      values[i] = obj[_keys[i]];
    }
    return values;
  }

// Convert an object into a list of `[key, value]` pairs.
  // The opposite of `_.object` with one argument.
  function pairs(obj) {
    var _keys = keys(obj);
    var length = _keys.length;
    var pairs = Array(length);
    for (var i = 0; i < length; i++) {
      pairs[i] = [_keys[i], obj[_keys[i]]];
    }
    return pairs;
  }

// Invert the keys and values of an object. The values must be serializable.
  function invert(obj) {
    var result = {};
    var _keys = keys(obj);
    for (var i = 0, length = _keys.length; i < length; i++) {
      result[obj[_keys[i]]] = _keys[i];
    }
    return result;
  }

// Return a sorted list of the function names available on the object.
  function functions(obj) {
    var names = [];
    for (var key in obj) {
      if (isFunction$1(obj[key])) names.push(key);
    }
    return names.sort();
  }

// An internal function for creating assigner functions.
  function createAssigner(keysFunc, defaults) {
    return function(obj) {
      var length = arguments.length;
      if (defaults) obj = Object(obj);
      if (length < 2 || obj == null) return obj;
      for (var index = 1; index < length; index++) {
        var source = arguments[index],
            keys = keysFunc(source),
            l = keys.length;
        for (var i = 0; i < l; i++) {
          var key = keys[i];
          if (!defaults || obj[key] === void 0) obj[key] = source[key];
        }
      }
      return obj;
    };
  }

// Extend a given object with all the properties in passed-in object(s).
  var extend = createAssigner(allKeys);

// Assigns a given object with all the own properties in the passed-in
  // object(s).
  // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
  var extendOwn = createAssigner(keys);

// Fill in a given object with default properties.
  var defaults = createAssigner(allKeys, true);

// Create a naked function reference for surrogate-prototype-swapping.
  function ctor() {
    return function(){};
  }

// An internal function for creating a new object that inherits from another.
  function baseCreate(prototype) {
    if (!isObject(prototype)) return {};
    if (nativeCreate) return nativeCreate(prototype);
    var Ctor = ctor();
    Ctor.prototype = prototype;
    var result = new Ctor;
    Ctor.prototype = null;
    return result;
  }

// Creates an object that inherits from the given prototype object.
  // If additional properties are provided then they will be added to the
  // created object.
  function create(prototype, props) {
    var result = baseCreate(prototype);
    if (props) extendOwn(result, props);
    return result;
  }

// Create a (shallow-cloned) duplicate of an object.
  function clone(obj) {
    if (!isObject(obj)) return obj;
    return isArray(obj) ? obj.slice() : extend({}, obj);
  }

// Invokes `interceptor` with the `obj` and then returns `obj`.
  // The primary purpose of this method is to "tap into" a method chain, in
  // order to perform operations on intermediate results within the chain.
  function tap(obj, interceptor) {
    interceptor(obj);
    return obj;
  }

// Normalize a (deep) property `path` to array.
  // Like `_.iteratee`, this function can be customized.
  function toPath$1(path) {
    return isArray(path) ? path : [path];
  }
  _$1.toPath = toPath$1;

// Internal wrapper for `_.toPath` to enable minification.
  // Similar to `cb` for `_.iteratee`.
  function toPath(path) {
    return _$1.toPath(path);
  }

// Internal function to obtain a nested property in `obj` along `path`.
  function deepGet(obj, path) {
    var length = path.length;
    for (var i = 0; i < length; i++) {
      if (obj == null) return void 0;
      obj = obj[path[i]];
    }
    return length ? obj : void 0;
  }

// Get the value of the (deep) property on `path` from `object`.
  // If any property in `path` does not exist or if the value is
  // `undefined`, return `defaultValue` instead.
  // The `path` is normalized through `_.toPath`.
  function get(object, path, defaultValue) {
    var value = deepGet(object, toPath(path));
    return isUndefined(value) ? defaultValue : value;
  }

// Shortcut function for checking if an object has a given property directly on
  // itself (in other words, not on a prototype). Unlike the internal `has`
  // function, this public version can also traverse nested properties.
  function has(obj, path) {
    path = toPath(path);
    var length = path.length;
    for (var i = 0; i < length; i++) {
      var key = path[i];
      if (!has$1(obj, key)) return false;
      obj = obj[key];
    }
    return !!length;
  }

// Keep the identity function around for default iteratees.
  function identity(value) {
    return value;
  }

// Returns a predicate for checking whether an object has a given set of
  // `key:value` pairs.
  function matcher(attrs) {
    attrs = extendOwn({}, attrs);
    return function(obj) {
      return isMatch(obj, attrs);
    };
  }

// Creates a function that, when passed an object, will traverse that object’s
  // properties down the given `path`, specified as an array of keys or indices.
  function property(path) {
    path = toPath(path);
    return function(obj) {
      return deepGet(obj, path);
    };
  }

// Internal function that returns an efficient (for current engines) version
  // of the passed-in callback, to be repeatedly applied in other Underscore
  // functions.
  function optimizeCb(func, context, argCount) {
    if (context === void 0) return func;
    switch (argCount == null ? 3 : argCount) {
      case 1: return function(value) {
        return func.call(context, value);
      };
      // The 2-argument case is omitted because we’re not using it.
      case 3: return function(value, index, collection) {
        return func.call(context, value, index, collection);
      };
      case 4: return function(accumulator, value, index, collection) {
        return func.call(context, accumulator, value, index, collection);
      };
    }
    return function() {
      return func.apply(context, arguments);
    };
  }

// An internal function to generate callbacks that can be applied to each
  // element in a collection, returning the desired result — either `_.identity`,
  // an arbitrary callback, a property matcher, or a property accessor.
  function baseIteratee(value, context, argCount) {
    if (value == null) return identity;
    if (isFunction$1(value)) return optimizeCb(value, context, argCount);
    if (isObject(value) && !isArray(value)) return matcher(value);
    return property(value);
  }

// External wrapper for our callback generator. Users may customize
  // `_.iteratee` if they want additional predicate/iteratee shorthand styles.
  // This abstraction hides the internal-only `argCount` argument.
  function iteratee(value, context) {
    return baseIteratee(value, context, Infinity);
  }
  _$1.iteratee = iteratee;

// The function we call internally to generate a callback. It invokes
  // `_.iteratee` if overridden, otherwise `baseIteratee`.
  function cb(value, context, argCount) {
    if (_$1.iteratee !== iteratee) return _$1.iteratee(value, context);
    return baseIteratee(value, context, argCount);
  }

// Returns the results of applying the `iteratee` to each element of `obj`.
  // In contrast to `_.map` it returns an object.
  function mapObject(obj, iteratee, context) {
    iteratee = cb(iteratee, context);
    var _keys = keys(obj),
        length = _keys.length,
        results = {};
    for (var index = 0; index < length; index++) {
      var currentKey = _keys[index];
      results[currentKey] = iteratee(obj[currentKey], currentKey, obj);
    }
    return results;
  }

// Predicate-generating function. Often useful outside of Underscore.
  function noop(){}

// Generates a function for a given object that returns a given property.
  function propertyOf(obj) {
    if (obj == null) return noop;
    return function(path) {
      return get(obj, path);
    };
  }

// Run a function **n** times.
  function times(n, iteratee, context) {
    var accum = Array(Math.max(0, n));
    iteratee = optimizeCb(iteratee, context, 1);
    for (var i = 0; i < n; i++) accum[i] = iteratee(i);
    return accum;
  }

// Return a random integer between `min` and `max` (inclusive).
  function random(min, max) {
    if (max == null) {
      max = min;
      min = 0;
    }
    return min + Math.floor(Math.random() * (max - min + 1));
  }

// A (possibly faster) way to get the current timestamp as an integer.
  var now = Date.now || function() {
    return new Date().getTime();
  };

// Internal helper to generate functions for escaping and unescaping strings
  // to/from HTML interpolation.
  function createEscaper(map) {
    var escaper = function(match) {
      return map[match];
    };
    // Regexes for identifying a key that needs to be escaped.
    var source = '(?:' + keys(map).join('|') + ')';
    var testRegexp = RegExp(source);
    var replaceRegexp = RegExp(source, 'g');
    return function(string) {
      string = string == null ? '' : '' + string;
      return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
    };
  }

// Internal list of HTML entities for escaping.
  var escapeMap = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#x27;',
    '`': '&#x60;'
  };

// Function for escaping strings to HTML interpolation.
  var _escape = createEscaper(escapeMap);

// Internal list of HTML entities for unescaping.
  var unescapeMap = invert(escapeMap);

// Function for unescaping strings from HTML interpolation.
  var _unescape = createEscaper(unescapeMap);

// By default, Underscore uses ERB-style template delimiters. Change the
  // following template settings to use alternative delimiters.
  var templateSettings = _$1.templateSettings = {
    evaluate: /<%([\s\S]+?)%>/g,
    interpolate: /<%=([\s\S]+?)%>/g,
    escape: /<%-([\s\S]+?)%>/g
  };

// When customizing `_.templateSettings`, if you don't want to define an
  // interpolation, evaluation or escaping regex, we need one that is
  // guaranteed not to match.
  var noMatch = /(.)^/;

// Certain characters need to be escaped so that they can be put into a
  // string literal.
  var escapes = {
    "'": "'",
    '\\': '\\',
    '\r': 'r',
    '\n': 'n',
    '\u2028': 'u2028',
    '\u2029': 'u2029'
  };

var escapeRegExp = /\\|'|\r|\n|\u2028|\u2029/g;

function escapeChar(match) {
    return '\\' + escapes[match];
  }

// In order to prevent third-party code injection through
  // `_.templateSettings.variable`, we test it against the following regular
  // expression. It is intentionally a bit more liberal than just matching valid
  // identifiers, but still prevents possible loopholes through defaults or
  // destructuring assignment.
  var bareIdentifier = /^\s*(\w|\$)+\s*$/;

// JavaScript micro-templating, similar to John Resig's implementation.
  // Underscore templating handles arbitrary delimiters, preserves whitespace,
  // and correctly escapes quotes within interpolated code.
  // NB: `oldSettings` only exists for backwards compatibility.
  function template(text, settings, oldSettings) {
    if (!settings && oldSettings) settings = oldSettings;
    settings = defaults({}, settings, _$1.templateSettings);

// Combine delimiters into one regular expression via alternation.
    var matcher = RegExp([
      (settings.escape || noMatch).source,
      (settings.interpolate || noMatch).source,
      (settings.evaluate || noMatch).source
    ].join('|') + '|$', 'g');

// Compile the template source, escaping string literals appropriately.
    var index = 0;
    var source = "__p+='";
    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
      source += text.slice(index, offset).replace(escapeRegExp, escapeChar);
      index = offset + match.length;

if (escape) {
        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
      } else if (interpolate) {
        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
      } else if (evaluate) {
        source += "';\n" + evaluate + "\n__p+='";
      }

// Adobe VMs need the match returned to produce the correct offset.
      return match;
    });
    source += "';\n";

source = "var __t,__p='',__j=Array.prototype.join," +
      "print=function(){__p+=__j.call(arguments,'');};\n" +
      source + 'return __p;\n';

var render;
    try {
      render = new Function(argument, '_', source);
    } catch (e) {
      e.source = source;
      throw e;
    }

var template = function(data) {
      return render.call(this, data, _$1);
    };

// Provide the compiled source as a convenience for precompilation.
    template.source = 'function(' + argument + '){\n' + source + '}';

return template;
  }

// Traverses the children of `obj` along `path`. If a child is a function, it
  // is invoked with its parent as context. Returns the value of the final
  // child, or `fallback` if any child is undefined.
  function result(obj, path, fallback) {
    path = toPath(path);
    var length = path.length;
    if (!length) {
      return isFunction$1(fallback) ? fallback.call(obj) : fallback;
    }
    for (var i = 0; i < length; i++) {
      var prop = obj == null ? void 0 : obj[path[i]];
      if (prop === void 0) {
        prop = fallback;
        i = length; // Ensure we don't continue iterating.
      }
      obj = isFunction$1(prop) ? prop.call(obj) : prop;
    }
    return obj;
  }

// Generate a unique integer id (unique within the entire client session).
  // Useful for temporary DOM ids.
  var idCounter = 0;
  function uniqueId(prefix) {
    var id = ++idCounter + '';
    return prefix ? prefix + id : id;
  }

// Start chaining a wrapped Underscore object.
  function chain(obj) {
    var instance = _$1(obj);
    instance._chain = true;
    return instance;
  }

// Internal function to execute `sourceFunc` bound to `context` with optional
  // `args`. Determines whether to execute a function as a constructor or as a
  // normal function.
  function executeBound(sourceFunc, boundFunc, context, callingContext, args) {
    if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
    var self = baseCreate(sourceFunc.prototype);
    var result = sourceFunc.apply(self, args);
    if (isObject(result)) return result;
    return self;
  }

// Partially apply a function by creating a version that has had some of its
  // arguments pre-filled, without changing its dynamic `this` context. `_` acts
  // as a placeholder by default, allowing any combination of arguments to be
  // pre-filled. Set `_.partial.placeholder` for a custom placeholder argument.
  var partial = restArguments(function(func, boundArgs) {
    var placeholder = partial.placeholder;
    var bound = function() {
      var position = 0, length = boundArgs.length;
      var args = Array(length);
      for (var i = 0; i < length; i++) {
        args[i] = boundArgs[i] === placeholder ? arguments[position++] : boundArgs[i];
      }
      while (position < arguments.length) args.push(arguments[position++]);
      return executeBound(func, bound, this, this, args);
    };
    return bound;
  });

partial.placeholder = _$1;

// Create a function bound to a given object (assigning `this`, and arguments,
  // optionally).
  var bind = restArguments(function(func, context, args) {
    if (!isFunction$1(func)) throw new TypeError('Bind must be called on a function');
    var bound = restArguments(function(callArgs) {
      return executeBound(func, bound, context, this, args.concat(callArgs));
    });
    return bound;
  });

// Internal helper for collection methods to determine whether a collection
  // should be iterated as an array or as an object.
  // Related: https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
  // Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094
  var isArrayLike = createSizePropertyCheck(getLength);

// Internal implementation of a recursive `flatten` function.
  function flatten$1(input, depth, strict, output) {
    output = output || [];
    if (!depth && depth !== 0)